56131011 has 12 divisors (see below), whose sum is σ = 81698760. Its totient is φ = 37134240.

The previous prime is 56130973. The next prime is 56131021. The reversal of 56131011 is 11013165.

56131011 is a `hidden beast` number, since 561 + 3 + 101 + 1 = 666.

It is not a de Polignac number, because 56131011 - 2¹⁸ = 55868867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56131021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22626 + ... + 24983.

It is an arithmetic number, because the mean of its divisors is an integer number (6808230).

Almost surely, 2^56131011 is an apocalyptic number.

56131011 is a deficient number, since it is larger than the sum of its proper divisors (25567749).

56131011 is a wasteful number, since it uses less digits than its factorization.

56131011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47746 (or 47743 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 56131011 is about 7492.0632004809. The cubic root of 56131011 is about 382.8843554168.

Adding to 56131011 its reverse (11013165), we get a palindrome (67144176).

The spelling of 56131011 in words is "fifty-six million, one hundred thirty-one thousand, eleven".